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380042621 = 7223243461
BaseRepresentation
bin10110101001101…
…111110101111101
3222111010011110122
4112221233311331
51234242330441
6101413344325
712263210660
oct2651576575
9874104418
10380042621
11185584712
12a73380a5
13609746ba
143868b6d7
152357034b
hex16a6fd7d

380042621 has 8 divisors (see below), whose sum is σ = 436283904. Its totient is φ = 324288720.

The previous prime is 380042591. The next prime is 380042647. The reversal of 380042621 is 126240083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 380042621 - 218 = 379780477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380042821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120170 + ... + 123291.

It is an arithmetic number, because the mean of its divisors is an integer number (54535488).

Almost surely, 2380042621 is an apocalyptic number.

It is an amenable number.

380042621 is a deficient number, since it is larger than the sum of its proper divisors (56241283).

380042621 is a wasteful number, since it uses less digits than its factorization.

380042621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243691.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 380042621 is about 19494.6818645496. The cubic root of 380042621 is about 724.3427232064.

The spelling of 380042621 in words is "three hundred eighty million, forty-two thousand, six hundred twenty-one".

Divisors: 1 7 223 1561 243461 1704227 54291803 380042621